Zobrazeno 1 - 10
of 11
pro vyhledávání: '"R. T. Lacoss"'
Autor:
R. T. Lacoss, T. E. Landers
Publikováno v:
IEEE Transactions on Geoscience Electronics. 15:26-32
This paper discusses the practical application of autoregressive spectral analysis to three different geophysical data sets. In all cases the amount of available data was limited so that autoregressive methods might give more detailed spectra than th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4fde663b125e09668735dfd8bf2a2d8f
https://doi.org/10.1109/tge.1977.294510
https://doi.org/10.1109/tge.1977.294510
Autor:
R. T. Lacoss
Publikováno v:
GEOPHYSICS. 36:661-675
Two new methods (Maximum Likelihood Method or MLM, and Maximum Entropy Method or MEM) for power spectral density estimation have been experimentally investigated. Both methods, unlike conventional methods, adapt to the actual characteristics of the n
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::62e2f58c62eca1df099a8c3bf67bf72c
https://doi.org/10.1190/1.1440203
https://doi.org/10.1190/1.1440203
Publikováno v:
GEOPHYSICS. 34:305-329
The results of a series of off‐line signal processing experiments are presented for long‐period data obtained from the Large Aperture Seismic Array (LASA) located in eastern Montana. The signal‐to‐noise ratio gains obtained with maximum‐lik
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2e5a8806d672e29c2cf06d05df2f8abb
https://doi.org/10.1190/1.1440014
https://doi.org/10.1190/1.1440014
Publikováno v:
IEEE Transactions on Applications and Industry. 83:161-166
Given the system x?(t)=A(t)x(t)+u(t),where A(t)=?A?(t) and ?u(t)??1, it will be shown that the control u=?x(t)/?x(t)? drives any initial state to zero in such a manner that the response time, the consumed fuel, and a linear combination of time and co
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::08205d5a305f75610f88f72c3837b96d
https://doi.org/10.1109/tai.1964.5407784
https://doi.org/10.1109/tai.1964.5407784
Publikováno v:
IEEE Transactions on Automatic Control. 8:196-202
Nonlinear systems of the form \dot{X}(t)=g[x(t);t]+u(t) , where x(t), u(t) , and g[x(t); t] are n vectors, are examined in this paper. It is shown that if \parellelx(t)\parellel = \sqrt{x_{1}^{2}(t) + ... + x_{n}^{2}(t)} is constant along trajectorie
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::63216fa309c221c8cf8b6a3e6fc7e1a8
https://doi.org/10.1109/tac.1963.1105581
https://doi.org/10.1109/tac.1963.1105581
Autor:
R. T. Lacoss
Publikováno v:
Aspects of Signal Processing With Emphasis on Underwater Acoustics, Part 2 ISBN: 9789401053501
Three power spectral density estimation problems are considered in this presentation. These are the estimation of power spectral density for a single scalar time series (or equivalently a line array), estimation of power spectral density matrices for
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3f2db25086e02670cd478ab47d56f0a6
https://doi.org/10.1007/978-94-011-3036-3_16
https://doi.org/10.1007/978-94-011-3036-3_16
The signal-to-noise ratio improvement obtained with delay-and-sum (DS) processing is discussed for short-period seismic data. It is shown that at least 3 km spacing should be maintained between seismometers at the Large Aperture Seismic Array (LASA)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::657de66977e2136a030cfac8df52b69a
https://doi.org/10.21236/ad0655142
https://doi.org/10.21236/ad0655142
Autor:
R T Lacoss
A study of possible configurations for a Large Aperture Seismic Array has been completed. An array having 21 identical subarrays located on three concentric circles has been found to yield the most satisfactory pattern in wave number space of all the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e10ad0a129248fdb87ca7dbc15f28e3e
https://doi.org/10.21236/ad0628148
https://doi.org/10.21236/ad0628148
Autor:
R. T. Lacoss, T. E. Landers
Publikováno v:
The Journal of the Acoustical Society of America. 64:S81-S81
Data from a 5‐m array of microphones has been collected and analyzed in the band 20–200 Hz to find the accuracy to which the azimuth of low‐flying subsonic aircraft can be tracked and to measure signal levels as a function of range. Flight path
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4c61c68255ce621d721f8d460adb9d65
https://doi.org/10.1121/1.2004395
https://doi.org/10.1121/1.2004395